Significant Accounting Policies (Schedule Of Unrealized Gains Or Losses On The Trust's Silver Holdings) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Significant Accounting Policies [Abstract]
Investment in silver - average cost	$ 491,080,000	$ 509,601,000
Realized loss on investment in silver	144,644,320
Investment in silver - lower of cost or market value	346,436,000	509,601,000
Unrealized gain on investment in silver	0	41,879,000
Investment in silver - market value	$ 346,436,000	$ 551,480,000

Market value of investment in silver received by the Trust in respect of the issuance of Shares at the lower of cost or market value as at the balance sheet date.

No definition available.

Name:	sivr_MarketValueOfInvestmentInSilver
Namespace Prefix:	sivr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant